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        <h1 id="wireshark-基础篇"><a href="#wireshark-基础篇" class="headerlink" title="wireshark 基础篇"></a>wireshark 基础篇</h1><h2 id="常见功能"><a href="#常见功能" class="headerlink" title="常见功能"></a>常见功能</h2><h2 id="显示过滤器"><a href="#显示过滤器" class="headerlink" title="显示过滤器"></a>显示过滤器</h2><h3 id="常见协议"><a href="#常见协议" class="headerlink" title="常见协议"></a>常见协议</h3><p>传输层：tcp udp sctp<br>数据链路层：Eter，lan，PPPOE<br>应-传输层：SSL<br>网-数据层：ARP</p>
<h3 id="协议字段"><a href="#协议字段" class="headerlink" title="协议字段"></a>协议字段</h3><h3 id="过滤关系"><a href="#过滤关系" class="headerlink" title="过滤关系"></a>过滤关系</h3><h3 id="常见的过滤"><a href="#常见的过滤" class="headerlink" title="常见的过滤"></a>常见的过滤</h3><ul>
<li>eth.src == 04:f9:38:11:11:11<ul>
<li>筛选源mac</li>
</ul>
</li>
<li>eth.type == 0x00<ul>
<li>筛选网络层使用ip协议的数据包</li>
</ul>
</li>
<li>ip.src != 192.168.1.1<ul>
<li>源ip不是</li>
<li>ip.addr</li>
<li>ip.dst</li>
</ul>
</li>
<li>http contains “test”<ul>
<li>查询http协议里面payload包含test字符串的包</li>
</ul>
</li>
<li>http.request.method</li>
</ul>
<h2 id="复合表达式过滤规则"><a href="#复合表达式过滤规则" class="headerlink" title="复合表达式过滤规则"></a>复合表达式过滤规则</h2><h3 id="连接词"><a href="#连接词" class="headerlink" title="连接词"></a>连接词</h3><ul>
<li>and , &amp;&amp;</li>
<li>or , ||</li>
<li>not , !</li>
<li>xor, ^^<ul>
<li>异或，相同出0 不同出1</li>
</ul>
</li>
<li>[…]<ul>
<li>分片</li>
</ul>
</li>
</ul>
<h3 id="常见复合式过滤器"><a href="#常见复合式过滤器" class="headerlink" title="常见复合式过滤器"></a>常见复合式过滤器</h3><ul>
<li>ip.src == 192.168.1.1 &amp;&amp; tcp[13]&amp;2<ul>
<li>筛选出源地址为192.168.1.1并且为syn的数据包</li>
</ul>
</li>
</ul>
<h2 id="捕获过滤器"><a href="#捕获过滤器" class="headerlink" title="捕获过滤器"></a>捕获过滤器</h2><p>ip src host 192.168.1.1</p>
<h3 id="捕获项"><a href="#捕获项" class="headerlink" title="捕获项"></a>捕获项</h3><h3 id="捕获参数"><a href="#捕获参数" class="headerlink" title="捕获参数"></a>捕获参数</h3><h3 id="捕获值"><a href="#捕获值" class="headerlink" title="捕获值"></a>捕获值</h3><h2 id="抓包简单分析"><a href="#抓包简单分析" class="headerlink" title="抓包简单分析"></a>抓包简单分析</h2><h3 id="快速查看整个包的协议框架"><a href="#快速查看整个包的协议框架" class="headerlink" title="快速查看整个包的协议框架"></a>快速查看整个包的协议框架</h3><ul>
<li>Frame -&gt;  protocols in frame: eth:ethertype:ip:tcp:http<ul>
<li>数据链路层 eth -&gt; ip协议  tcp协议 -&gt; http协议</li>
</ul>
</li>
<li>Ethernet <ul>
<li>type：IPv4<ul>
<li>告诉网络层用的什么协议</li>
</ul>
</li>
</ul>
</li>
<li>Internet Protocol<ul>
<li>Protocol:TCP<ul>
<li>告诉传输层使用什么协议</li>
</ul>
</li>
</ul>
</li>
<li>Transmission</li>
</ul>
<h3 id="如何查看更具体信息"><a href="#如何查看更具体信息" class="headerlink" title="如何查看更具体信息"></a>如何查看更具体信息</h3><p>右键追踪流</p>
<h1 id="https取证"><a href="#https取证" class="headerlink" title="https取证"></a>https取证</h1><h2 id="远程数据包捕获"><a href="#远程数据包捕获" class="headerlink" title="远程数据包捕获"></a>远程数据包捕获</h2><ul>
<li>远程windows系统需要安装winpcap,运行该程序，其对外端口默认为2002</li>
<li>本地有张网卡要与远程通信，添加一个远程网卡<ul>
<li>捕获》选项》管理接口》远程接口》加入远程设备端口为2002以及账号密码</li>
</ul>
</li>
</ul>
<h2 id="https解码"><a href="#https解码" class="headerlink" title="https解码"></a>https解码</h2><ul>
<li>使用捕获过滤器抓包</li>
<li>tlsv1包<ul>
<li>获取私钥，并且解压,获取pem文件<ul>
<li>openssl rsa -in server.key -out test.pem</li>
</ul>
</li>
</ul>
</li>
<li>选择要解密的流》编辑》首选项》protocols&gt;SSL&gt;RSA keys list&gt;Editors&gt;+&gt;<ul>
<li>wireshark 添加对应key用于解密，对应ip和端口 http协议以及key</li>
</ul>
</li>
<li>tlsv1包就会变成http包了</li>
</ul>
<h2 id="图片取证分析"><a href="#图片取证分析" class="headerlink" title="图片取证分析"></a>图片取证分析</h2><ul>
<li>抓包，找到流</li>
<li>右键追踪流-》http</li>
<li>显示和保存数据为 原始数据-》保存 保存为.bin文件</li>
<li>删除保留的文件的请求头</li>
<li>使用winhex 打开下载的bin文件，恢复成图片文件<h2 id="音频取证分析"><a href="#音频取证分析" class="headerlink" title="音频取证分析"></a>音频取证分析</h2></li>
</ul>
<h1 id="通信软件实时取证"><a href="#通信软件实时取证" class="headerlink" title="通信软件实时取证"></a>通信软件实时取证</h1><h2 id="包解密"><a href="#包解密" class="headerlink" title="包解密"></a>包解密</h2><p>wireshark自带解密工具</p>
<p>选择流&gt;解码为》</p>
<h3 id="qq解码"><a href="#qq解码" class="headerlink" title="qq解码"></a>qq解码</h3><p>UDP ， 8000 , OICQ</p>
<h3 id="找文件包"><a href="#找文件包" class="headerlink" title="找文件包"></a>找文件包</h3><p>过滤条件：data</p>
<h2 id="文件恢复"><a href="#文件恢复" class="headerlink" title="文件恢复"></a>文件恢复</h2><p>找到流-&gt;右键流追踪-&gt;保持为原始数据-&gt;保持为bin文件-&gt;winhex来恢复文件</p>
<p>http包可以删除请求头和返回头来恢复文件，但是tcp包整个没有头信息不用去删除</p>
<h3 id="winhex恢复文件"><a href="#winhex恢复文件" class="headerlink" title="winhex恢复文件"></a>winhex恢复文件</h3><p>加载bin文件之后&gt;File&gt;save as&gt;保持为对应的文件(可以从流里面查看文件格式)</p>
<h1 id="邮件取证"><a href="#邮件取证" class="headerlink" title="邮件取证"></a>邮件取证</h1><p>找到流：smtp</p>
<p>第一个334 下面是用户名<br>第二个 334 下面是密码<br>base64加密</p>
<h1 id="统计工具"><a href="#统计工具" class="headerlink" title="统计工具"></a>统计工具</h1><h2 id="部分文件统计"><a href="#部分文件统计" class="headerlink" title="部分文件统计"></a>部分文件统计</h2><p>用于统计当前网络有多少包，配合过滤器来知道当前网络什么包最多</p>
<p>统计》捕获文件属性</p>
<h2 id="协议分级统计"><a href="#协议分级统计" class="headerlink" title="协议分级统计"></a>协议分级统计</h2><p>根据tcp/ip模型来知道统计</p>
<p>统计》协议分级</p>
<h2 id="端点统计"><a href="#端点统计" class="headerlink" title="端点统计"></a>端点统计</h2><p>端到端的统计, 可以知道端口，以及包的大小</p>
<p>统计》endpoint</p>
<h2 id="对话统计"><a href="#对话统计" class="headerlink" title="对话统计"></a>对话统计</h2><p>类似端点统计多了持续时间</p>
<h2 id="http统计"><a href="#http统计" class="headerlink" title="http统计"></a>http统计</h2><ul>
<li>分组<ul>
<li>显示响应</li>
</ul>
</li>
<li>请求消息<ul>
<li>显示请求头的信息</li>
</ul>
</li>
<li>负载分配<ul>
<li>显示那些服务器回包</li>
</ul>
</li>
</ul>
<h2 id="tcp数据流"><a href="#tcp数据流" class="headerlink" title="tcp数据流"></a>tcp数据流</h2><p>统计》流量图</p>
<h2 id="IP属性"><a href="#IP属性" class="headerlink" title="IP属性"></a>IP属性</h2><p>统计》IPV4 统计</p>
<h1 id="信息统计"><a href="#信息统计" class="headerlink" title="信息统计"></a>信息统计</h1><h2 id="网络性能判定"><a href="#网络性能判定" class="headerlink" title="网络性能判定"></a>网络性能判定</h2><p>统计》IO图表</p>
<h2 id="链路吞吐量测算"><a href="#链路吞吐量测算" class="headerlink" title="链路吞吐量测算"></a>链路吞吐量测算</h2><h2 id="TCP吞吐量测算"><a href="#TCP吞吐量测算" class="headerlink" title="TCP吞吐量测算"></a>TCP吞吐量测算</h2><h2 id="TCP重传判断"><a href="#TCP重传判断" class="headerlink" title="TCP重传判断"></a>TCP重传判断</h2>
      
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              <div class="post-toc-content"><ol class="nav"><li class="nav-item nav-level-1"><a class="nav-link" href="#wireshark-基础篇"><span class="nav-number">1.</span> <span class="nav-text">wireshark 基础篇</span></a><ol class="nav-child"><li class="nav-item nav-level-2"><a class="nav-link" href="#常见功能"><span class="nav-number">1.1.</span> <span class="nav-text">常见功能</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#显示过滤器"><span class="nav-number">1.2.</span> <span class="nav-text">显示过滤器</span></a><ol class="nav-child"><li class="nav-item nav-level-3"><a class="nav-link" href="#常见协议"><span class="nav-number">1.2.1.</span> <span class="nav-text">常见协议</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#协议字段"><span class="nav-number">1.2.2.</span> <span class="nav-text">协议字段</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#过滤关系"><span class="nav-number">1.2.3.</span> <span class="nav-text">过滤关系</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#常见的过滤"><span class="nav-number">1.2.4.</span> <span class="nav-text">常见的过滤</span></a></li></ol></li><li class="nav-item nav-level-2"><a class="nav-link" href="#复合表达式过滤规则"><span class="nav-number">1.3.</span> <span class="nav-text">复合表达式过滤规则</span></a><ol class="nav-child"><li class="nav-item nav-level-3"><a class="nav-link" href="#连接词"><span class="nav-number">1.3.1.</span> <span class="nav-text">连接词</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#常见复合式过滤器"><span class="nav-number">1.3.2.</span> <span class="nav-text">常见复合式过滤器</span></a></li></ol></li><li class="nav-item nav-level-2"><a class="nav-link" href="#捕获过滤器"><span class="nav-number">1.4.</span> <span class="nav-text">捕获过滤器</span></a><ol class="nav-child"><li class="nav-item nav-level-3"><a class="nav-link" href="#捕获项"><span class="nav-number">1.4.1.</span> <span class="nav-text">捕获项</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#捕获参数"><span class="nav-number">1.4.2.</span> <span class="nav-text">捕获参数</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#捕获值"><span class="nav-number">1.4.3.</span> <span class="nav-text">捕获值</span></a></li></ol></li><li class="nav-item nav-level-2"><a class="nav-link" href="#抓包简单分析"><span class="nav-number">1.5.</span> <span class="nav-text">抓包简单分析</span></a><ol class="nav-child"><li class="nav-item nav-level-3"><a class="nav-link" href="#快速查看整个包的协议框架"><span class="nav-number">1.5.1.</span> <span class="nav-text">快速查看整个包的协议框架</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#如何查看更具体信息"><span class="nav-number">1.5.2.</span> <span class="nav-text">如何查看更具体信息</span></a></li></ol></li></ol></li><li class="nav-item nav-level-1"><a class="nav-link" href="#https取证"><span class="nav-number">2.</span> <span class="nav-text">https取证</span></a><ol class="nav-child"><li class="nav-item nav-level-2"><a class="nav-link" href="#远程数据包捕获"><span class="nav-number">2.1.</span> <span class="nav-text">远程数据包捕获</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#https解码"><span class="nav-number">2.2.</span> <span class="nav-text">https解码</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#图片取证分析"><span class="nav-number">2.3.</span> <span class="nav-text">图片取证分析</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#音频取证分析"><span class="nav-number">2.4.</span> <span class="nav-text">音频取证分析</span></a></li></ol></li><li class="nav-item nav-level-1"><a class="nav-link" href="#通信软件实时取证"><span class="nav-number">3.</span> <span class="nav-text">通信软件实时取证</span></a><ol class="nav-child"><li class="nav-item nav-level-2"><a class="nav-link" href="#包解密"><span class="nav-number">3.1.</span> <span class="nav-text">包解密</span></a><ol class="nav-child"><li class="nav-item nav-level-3"><a class="nav-link" href="#qq解码"><span class="nav-number">3.1.1.</span> <span class="nav-text">qq解码</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#找文件包"><span class="nav-number">3.1.2.</span> <span class="nav-text">找文件包</span></a></li></ol></li><li class="nav-item nav-level-2"><a class="nav-link" href="#文件恢复"><span class="nav-number">3.2.</span> <span class="nav-text">文件恢复</span></a><ol class="nav-child"><li class="nav-item nav-level-3"><a class="nav-link" href="#winhex恢复文件"><span class="nav-number">3.2.1.</span> <span class="nav-text">winhex恢复文件</span></a></li></ol></li></ol></li><li class="nav-item nav-level-1"><a class="nav-link" href="#邮件取证"><span class="nav-number">4.</span> <span class="nav-text">邮件取证</span></a></li><li class="nav-item nav-level-1"><a class="nav-link" href="#统计工具"><span class="nav-number">5.</span> <span class="nav-text">统计工具</span></a><ol class="nav-child"><li class="nav-item nav-level-2"><a class="nav-link" href="#部分文件统计"><span class="nav-number">5.1.</span> <span class="nav-text">部分文件统计</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#协议分级统计"><span class="nav-number">5.2.</span> <span class="nav-text">协议分级统计</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#端点统计"><span class="nav-number">5.3.</span> <span class="nav-text">端点统计</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#对话统计"><span class="nav-number">5.4.</span> <span class="nav-text">对话统计</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#http统计"><span class="nav-number">5.5.</span> <span class="nav-text">http统计</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#tcp数据流"><span class="nav-number">5.6.</span> <span class="nav-text">tcp数据流</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#IP属性"><span class="nav-number">5.7.</span> <span class="nav-text">IP属性</span></a></li></ol></li><li class="nav-item nav-level-1"><a class="nav-link" href="#信息统计"><span class="nav-number">6.</span> <span class="nav-text">信息统计</span></a><ol class="nav-child"><li class="nav-item nav-level-2"><a class="nav-link" href="#网络性能判定"><span class="nav-number">6.1.</span> <span class="nav-text">网络性能判定</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#链路吞吐量测算"><span class="nav-number">6.2.</span> <span class="nav-text">链路吞吐量测算</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#TCP吞吐量测算"><span class="nav-number">6.3.</span> <span class="nav-text">TCP吞吐量测算</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#TCP重传判断"><span class="nav-number">6.4.</span> <span class="nav-text">TCP重传判断</span></a></li></ol></li></ol></div>
            

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                  if (indexOfTitle.length > 0 || indexOfContent.length > 0) {
                    isMatch = true;
                    hitCount = indexOfTitle.length + indexOfContent.length;
                  }
                }

                // show search results

                if (isMatch) {
                  // sort index by position of keyword

                  [indexOfTitle, indexOfContent].forEach(function (index) {
                    index.sort(function (itemLeft, itemRight) {
                      if (itemRight.position !== itemLeft.position) {
                        return itemRight.position - itemLeft.position;
                      } else {
                        return itemLeft.word.length - itemRight.word.length;
                      }
                    });
                  });

                  // merge hits into slices

                  function mergeIntoSlice(text, start, end, index) {
                    var item = index[index.length - 1];
                    var position = item.position;
                    var word = item.word;
                    var hits = [];
                    var searchTextCountInSlice = 0;
                    while (position + word.length <= end && index.length != 0) {
                      if (word === searchText) {
                        searchTextCountInSlice++;
                      }
                      hits.push({position: position, length: word.length});
                      var wordEnd = position + word.length;

                      // move to next position of hit

                      index.pop();
                      while (index.length != 0) {
                        item = index[index.length - 1];
                        position = item.position;
                        word = item.word;
                        if (wordEnd > position) {
                          index.pop();
                        } else {
                          break;
                        }
                      }
                    }
                    searchTextCount += searchTextCountInSlice;
                    return {
                      hits: hits,
                      start: start,
                      end: end,
                      searchTextCount: searchTextCountInSlice
                    };
                  }

                  var slicesOfTitle = [];
                  if (indexOfTitle.length != 0) {
                    slicesOfTitle.push(mergeIntoSlice(title, 0, title.length, indexOfTitle));
                  }

                  var slicesOfContent = [];
                  while (indexOfContent.length != 0) {
                    var item = indexOfContent[indexOfContent.length - 1];
                    var position = item.position;
                    var word = item.word;
                    // cut out 100 characters
                    var start = position - 20;
                    var end = position + 80;
                    if(start < 0){
                      start = 0;
                    }
                    if (end < position + word.length) {
                      end = position + word.length;
                    }
                    if(end > content.length){
                      end = content.length;
                    }
                    slicesOfContent.push(mergeIntoSlice(content, start, end, indexOfContent));
                  }

                  // sort slices in content by search text's count and hits' count

                  slicesOfContent.sort(function (sliceLeft, sliceRight) {
                    if (sliceLeft.searchTextCount !== sliceRight.searchTextCount) {
                      return sliceRight.searchTextCount - sliceLeft.searchTextCount;
                    } else if (sliceLeft.hits.length !== sliceRight.hits.length) {
                      return sliceRight.hits.length - sliceLeft.hits.length;
                    } else {
                      return sliceLeft.start - sliceRight.start;
                    }
                  });

                  // select top N slices in content

                  var upperBound = parseInt('1');
                  if (upperBound >= 0) {
                    slicesOfContent = slicesOfContent.slice(0, upperBound);
                  }

                  // highlight title and content

                  function highlightKeyword(text, slice) {
                    var result = '';
                    var prevEnd = slice.start;
                    slice.hits.forEach(function (hit) {
                      result += text.substring(prevEnd, hit.position);
                      var end = hit.position + hit.length;
                      result += '<b class="search-keyword">' + text.substring(hit.position, end) + '</b>';
                      prevEnd = end;
                    });
                    result += text.substring(prevEnd, slice.end);
                    return result;
                  }

                  var resultItem = '';

                  if (slicesOfTitle.length != 0) {
                    resultItem += "<li><a href='" + articleUrl + "' class='search-result-title'>" + highlightKeyword(title, slicesOfTitle[0]) + "</a>";
                  } else {
                    resultItem += "<li><a href='" + articleUrl + "' class='search-result-title'>" + title + "</a>";
                  }

                  slicesOfContent.forEach(function (slice) {
                    resultItem += "<a href='" + articleUrl + "'>" +
                      "<p class=\"search-result\">" + highlightKeyword(content, slice) +
                      "...</p>" + "</a>";
                  });

                  resultItem += "</li>";
                  resultItems.push({
                    item: resultItem,
                    searchTextCount: searchTextCount,
                    hitCount: hitCount,
                    id: resultItems.length
                  });
                }
              })
            };
            if (keywords.length === 1 && keywords[0] === "") {
              resultContent.innerHTML = '<div id="no-result"><i class="fa fa-search fa-5x"></i></div>'
            } else if (resultItems.length === 0) {
              resultContent.innerHTML = '<div id="no-result"><i class="fa fa-frown-o fa-5x"></i></div>'
            } else {
              resultItems.sort(function (resultLeft, resultRight) {
                if (resultLeft.searchTextCount !== resultRight.searchTextCount) {
                  return resultRight.searchTextCount - resultLeft.searchTextCount;
                } else if (resultLeft.hitCount !== resultRight.hitCount) {
                  return resultRight.hitCount - resultLeft.hitCount;
                } else {
                  return resultRight.id - resultLeft.id;
                }
              });
              var searchResultList = '<ul class=\"search-result-list\">';
              resultItems.forEach(function (result) {
                searchResultList += result.item;
              })
              searchResultList += "</ul>";
              resultContent.innerHTML = searchResultList;
            }
          }

          if ('auto' === 'auto') {
            input.addEventListener('input', inputEventFunction);
          } else {
            $('.search-icon').click(inputEventFunction);
            input.addEventListener('keypress', function (event) {
              if (event.keyCode === 13) {
                inputEventFunction();
              }
            });
          }

          // remove loading animation
          $(".local-search-pop-overlay").remove();
          $('body').css('overflow', '');

          proceedsearch();
        }
      });
    }

    // handle and trigger popup window;
    $('.popup-trigger').click(function(e) {
      e.stopPropagation();
      if (isfetched === false) {
        searchFunc(path, 'local-search-input', 'local-search-result');
      } else {
        proceedsearch();
      };
    });

    $('.popup-btn-close').click(onPopupClose);
    $('.popup').click(function(e){
      e.stopPropagation();
    });
    $(document).on('keyup', function (event) {
      var shouldDismissSearchPopup = event.which === 27 &&
        $('.search-popup').is(':visible');
      if (shouldDismissSearchPopup) {
        onPopupClose();
      }
    });
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